K 10
svn:author
V 3
dim
K 8
svn:date
V 27
2021-12-21T16:03:09.188091Z
K 7
svn:log
V 794
Makefile: Fix MAKEOBJDIRPREFIX command-line variable check for bmake

Unlike the old fmake, running make FOO=bar when using bmake doesn't put
FOO=bar in .MAKEFLAGS at the top level, it instead just puts FOO in
.MAKEOVERRIDES and the full MAKEFLAGS will be formed for sub-makes.
Moreover, this only applies for sub-makes in rules, so this doesn't
apply to those in shell assignments. This means that the current check
does not catch make MAKEOBJDIRPREFIX=..., only those defined in config
files. Thus we must also check .MAKEOVERRIDES explicitly.

Reviewed by:	sjg
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D31015

(cherry picked from commit d0c737e18454868447f731fe2b10d04f50d9d53b)

Git Hash:   839cada5af3470afa1cd4531c9c108f5adb8a5b1
Git Author: jrtc27@FreeBSD.org
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